Sivasankaran M A, Reddy S Sivamurthy, Govindaradjane S, Ramesh R
Department of Civil Engineering, Pondicherry Engineering College, Pondicherry.
J Environ Sci Eng. 2007 Jan;49(1):7-12.
Nineteen representative water samples were collected from surface and ground water sources, covering urban, rural area, shallow and deep aquifers in Pondicherry region. The samples were analysed for various pesticide residues such as HCH, Aldrin and DDT. Both surface and ground water sources found to exhibit the residuals of various pesticides. The residual levels oforganochlorine pesticides were found to be three to four times more in ground water sources of agricultural areas than in urban areas, indicating the impact of usage of pesticides for agriculture. It is evident that total residuals of organochlorine pesticides are more in tanks followed by shallow wells and deep wells. However, the residual levels of pesticides were found well below the maximum acceptable level of 100 ng/L for individual pesticides for drinking purpose in the study area. Though the residual levels of pesticides in the study area were well below the acute toxicological problems, the major concern is for long term, chronic exposure from compounds that may be carcinogenic.
从本地治里地区的地表水和地下水源采集了19个具有代表性的水样，涵盖城市、农村地区、浅层和深层含水层。对这些样品进行了多种农药残留分析，如六氯环己烷、艾氏剂和滴滴涕。地表水和地下水源均检测出多种农药残留。农业区地下水源中有机氯农药的残留水平比城市地区高两到三倍，表明农业使用农药产生了影响。显然，有机氯农药的总残留量在蓄水池中最高，其次是浅井和深井。然而，研究区域内用于饮用的单个农药残留水平远低于最大可接受水平100纳克/升。尽管研究区域内农药残留水平远低于急性毒理学问题的标准，但主要担忧的是长期接触可能致癌的化合物所带来的慢性影响。
